One complete turn of the double helix of DNA contains 10 pairs of bases and is 3.4 nm long What is the approximate length of the DNA coding sequence of lysozyme a protein of 129 amino acids?
Well, we would have to know how many % of the coding sequence would be exons and introns, but let's ignore this and assume 100% of the sequence are exons;
129 aminoacids = 129 codons = 129*3 nucleotides = 387 nucleotides.
10 pairs of bases = 3,4 nm;
387/10 = 38,7
38,7 * 3,4 = 131,58 nm.
Consider the sequence (a_i) where a_i is pi rounded to the i_th decimal place. This sequence clearly contains only rational numbers since every number in it has a finite decimal expansion. Furthermore this sequence is Cauchy since a_i and a_j can differ at most by 10^(-min(i,j)) or something which can be made arbitrarily small by choosing a lower bound for i and j. Now note that this sequence converges to pi in the reals, so…
Restriction enzymes cleave DNA at a particular recognition site -- a particular sequence of nucleotides. You can imagine the following scenarios: 1. The bacterial chromosome does not contain the recognition sequence 2. The bacterial chromosome contains the recognition sequence, but that particular part of the DNA is either supercoiled to keep the restriction enzyme from finding the sequence, or it's single stranded as when being replicated or transcribed. 3. The bacterial chromosome contains the recognition…
The train crash was the result of a sequence of otherwise unrelated mechanical failures. Arranging the separate clues in the proper sequence would reveal the hidden message. It made sense that she learned how to measure a cup, then pour a cup of liquid out, before she was allowed to complete the sequence using acid.
The positive strand of DNA is the one whose sequence contains the instructions for building a protein. The negative strand merely contains the complementary sequence, according to the base-pairing rules (A pairs with T, C pairs with G); the negative strand is not normally transcribed into RNA nor translated into protein.
not "maths sequences" it's "mathematical sequence" In mathematics, a sequence is an ordered list of objects (or events). Like a set, it contains members (also called elements or terms), and the number of terms (possibly infinite) is called the length of the sequence. Unlike a set, order matters, and the exact same elements can appear multiple times at different positions in the sequence